Enable the ability to run layout tests on Vista as well as XP. See the note ...

webkit/tools/test_shell/test_shell_main.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/at_exit.h"
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/event_recorder.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 61 matching lines @@
   // directly, its constructor sets up some necessary state.
   MessageLoopForUI main_message_loop;
 
   bool suppress_error_dialogs = (
        base::SysInfo::HasEnvVar(L"CHROME_HEADLESS") ||
        parsed_command_line.HasSwitch(test_shell::kNoErrorDialogs) ||
        parsed_command_line.HasSwitch(test_shell::kLayoutTests));
   bool layout_test_mode =
       parsed_command_line.HasSwitch(test_shell::kLayoutTests);
   bool ux_theme = parsed_command_line.HasSwitch(test_shell::kUxTheme);
-  bool generic_theme =
+  bool classic_theme =
+      parsed_command_line.HasSwitch(test_shell::kClassicTheme);
+  bool generic_theme = (layout_test_mode && !ux_theme && !classic_theme) ||
       parsed_command_line.HasSwitch(test_shell::kGenericTheme);
-  bool classic_theme = (layout_test_mode && !ux_theme && !generic_theme) ||
-      parsed_command_line.HasSwitch(test_shell::kClassicTheme);
 
   bool enable_gp_fault_error_box = false;
   enable_gp_fault_error_box =
       parsed_command_line.HasSwitch(test_shell::kGPFaultErrorBox);
   TestShell::InitLogging(suppress_error_dialogs,
                          layout_test_mode,
                          enable_gp_fault_error_box);
 
   // Initialize WebKit for this scope.
   TestShellWebKitInit test_shell_webkit_init(layout_test_mode);
@@ skipping 254 matching lines @@
 
   TestShell::ShutdownTestShell();
   TestShell::CleanupLogging();
 
   // Tear down shared StatsTable; prevents unit_tests from leaking it.
   StatsTable::set_current(NULL);
   delete table;
 
   return 0;
 }